ASTROSAT CZTI

Data Quality Report

Orbit 12775

Creation date: 2024-06-27T16:32:06.527037
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A04_110T04_9000001886_12775cztM0_level2.evt modeM0/AS1A04_110T04_9000001886_12775cztM0_level2_quad_clean.evt
Size (bytes)496,405,440107,444,160
Size473.4 MB 102.5 MB
Events in quadrant A3,211,727725,131
Events in quadrant B3,267,105736,064
Events in quadrant C2,820,739722,236
Events in quadrant D5,322,064646,432

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01240
B01240
C01240
D01240

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0135752
B0136301
C0127541
D0199801

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A090
B090
C090
D090

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A6067540.890061%
B60671662.736113%
C6067280.461513%
D606773212.065271%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 6998 6069 34 34 0.49% 0.56%
B 6998 6069 96 96 1.37% 1.58%
C 6998 6069 16 16 0.23% 0.26%
D 6998 6069 692 692 9.89% 11.40%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 8 15 375022 2668.82 693 678 140.3
A 12 189 126093 894.12 693 678 140.3
A 8 6 27478 191.07 693 678 140.3
B 4 239 408988 3117.12 688 669 131.0
B 3 64 77405 585.81 688 669 131.0
B 0 219 23696 175.79 688 669 131.0
C 15 208 221070 1437.99 666 668 153.3
C 13 61 4813 27.04 666 668 153.3
C 14 234 3251 16.85 666 668 153.3
D 1 52 2443284 16131.77 631 612 151.4
D 8 195 408793 2695.69 631 612 151.4
D 13 104 31238 202.26 631 612 151.4

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter